DRINKING WATER

Linking Technologies Key To A Successful Potable Reuse Project
Linking Technologies Key To A Successful Potable Reuse Project

Potable reuse offers a massive opportunity to recover water from the wastewater process, but projects face a variety of barriers to getting off the ground. Most successful early adopters engaged early with their constituents and implemented smaller-scale demonstration projects that were accessible to the public to prove the technology and process.

DRINKING WATER CASE STUDIES AND WHITE PAPERS

  • A Legacy Of Clean Water
    A Legacy Of Clean Water

    Helping to maintain clean water is part of the Whalen family history, a story that begins in the mid-1990s with a father’s fervent belief that his research could make a difference and his son’s intense desire to ensure it did.

  • Optioneering Helps MidCoast Water Transform Gloucester Water Network Into A Reliable, Efficient System
    Optioneering Helps MidCoast Water Transform Gloucester Water Network Into A Reliable, Efficient System

    MidCoast Water delivers water and sewerage services to 40,000 households in the Manning, Great Lakes, and Gloucester communities of New South Wales in Australia. It also supplies 8 billion liters of water a year to Karuah in the south, Crowdy Head in the north, and Gloucester in the west.

  • Aquatech’s Seawater Reverse Osmosis Plant Succeeds In India India’s first Ultra Mega Power Project (UMPP) at Mundra in Coastal Gujarat, a 4,000 MW coal fired plant, is owned by Coastal Gujarat Power Limited (CGPL), a Tata Power group company.
  • A Helpful Guide To The Benefits Of The Single Rolling Diaphragm
    A Helpful Guide To The Benefits Of The Single Rolling Diaphragm

    Reducing water loss and saving money are two of the highest priorities—and most consistent challenges—facing water professionals. Both of these issues stem from water pressure control.

  • Pre-Filtration Is Essential To Protect Your Membranes
    Pre-Filtration Is Essential To Protect Your Membranes

    Any Reverse Osmosis System is only as good as the Pre-filtration System protecting it.  Pre-filtration is no place to scrimp when it comes to sizing, quality, efficiency and performance. 

  • Maximizing Your ROI On Test Equipment
    Maximizing Your ROI On Test Equipment

    In today’s economic climate, it’s tempting to want to buy the cheapest test equipment you can now. But, how can you tell what the true cost of test equipment is? You have to consider how widely your water and chemical consumption will vary as the readings on your instrumentation does. By Heather Rekalske, Myron L Company

  • SOC 2 Basics: Find Secure AMI In The Cloud, Without Getting Lost In A Fog
    SOC 2 Basics: Find Secure AMI In The Cloud, Without Getting Lost In A Fog

    The history of commercial online transactions is riddled with horror stories about data security breaches. Think Equifax, Target, Yahoo, Uber, Sony PlayStation … the list goes on. How can a utility maximize the benefits advanced metering infrastructure (AMI) offers for more efficient data collection and management, without having to worry about seeing its name on the front page of tomorrow’s newspaper?

  • Full-Scale Installation Report For Z-92® Uranium Removal – City Of Grand Island, NE
    Full-Scale Installation Report For Z-92® Uranium Removal – City Of Grand Island, NE

    A single WRT Z-92® Uranium Removal treatment system was selected by the City of Grand Island, NE to remove high concentrations of uranium in three city wells.  When the Z-92® Uranium Removal treatment system was installed in 2012, it was the largest uranium treatment facility in the nation. The high uranium in the raw water source is consistently being reduced to levels below the Maximum Contaminant Level (MCL). 

  • R450<sup>&trade;</sup> System Grabs More Info From The Inflow
    R450 System Grabs More Info From The Inflow

    The City of Clermont, Florida is located in Lake County 22 miles west of Orlando; and, like its neighbor, has an economy driven largely by tourism.

  • The Top 5 Problems That Hypochlorite Skid-Mounted Chlorination Systems Solve
    The Top 5 Problems That Hypochlorite Skid-Mounted Chlorination Systems Solve

    A self-contained hypochlorite skid-mounted chlorination system injecting sodium hypochlorite (NaOCl) can solve (at least) 5 major problems afflicting many small commercial, industrial or community water systems.

More Drinking Water Case Studies and White Papers

DRINKING WATER APPLICATION NOTES

  • Removal Of PFCs With Activated Carbon

    In recent years, various perflorinated chemicals (PFCs) have come under increasing scrutiny due to their presence in the environment, in animals, and in human blood samples. There are two major classes of PFCs: perfluoroalkyl sulfonates such as perfluorooctanesulfonic acid (PFOS) and long chain perfluoroalkyl carboxylates such as perfluorooctanoic acid (PFOA) and perfluorononanoic acid (PFNA).

  • Secret To Disinfection Monitoring For High Chlorine Residual Wastewater Applications

    Some wastewater applications require chlorine residuals greater than can be effectively monitored using DPD due to the oxidation of the Wurster dye to a colorless Imine. Such applications include industrial wastewater processes that inherently have a high chlorine demand thereby requiring a more robust monitoring method.

  • Hach FilterTrak 660™ Sc Laser Nephelometer Even More Practical For Ultra-Low Turbidity Monitoring

    Now compatible with the Hach sc100 Controller, the FilterTrak 660 sc Nephelometer connects as a ‘plug and play’ sensor with the universal, dualchannel controller that features an inherent power supply.

  • Application Note: Continuous Monitoring Of Drinking Water Provides Assurance Of Safety A water utility in Ohio wanted to learn more about the variability of water quality parameters such as pH, ORP, turbidity, and chlorine. Previously, most of these parameters had been measured by spot sampling protocols with only a few measurements during a daily period. In order to more accurately assess the water variability, the utility used a YSI 6920DW Drinking Water Multiprobe
  • New Water Turbidity Measurement Technology — The US Experience

    The amount of insoluble matter present in drinking water is an essential quality indicator. Silt, sand, bacteria, spores, and chemical precipitates all contribute to the cloudiness or turbidity of water. Drinking water (DW) which is highly turbid can be unpalatable and unsafe. Consumption of even low concentrations of certain bacteria and other microorganisms can cause serious health effects. Consequently, an accurate and sensitive measurement of turbidity is vital for ensuring that drinking water is free of these contaminants.

  • Application Note: Water Flows From The Golden Hills Of California Each morning John Johnson drives the few miles from his smalltown home in northern California to the Center at Pardee Reservoir. Nestled among the foothills of the Sierra Nevada mountain range, the reservoir is a long 100 miles away from San Francisco Bay. By YSI
  • A New Way Of Designing With Reverse Osmosis Membranes

    Process design in water treatment is historically confined to proprietary or user-defined spreadsheets on a unit operation basis, with users manually adding results from each unit process upstream into the next operation.

  • Preliminary Assessment Of Water Quality In Riviera Grise Near Port-Au-Prince, Haiti

    The Riviera Grise drains water from the Cul-de-Sac watershed, Haiti, which covers most of the rural areas along the flood plains and areas that extend into steep hillsides. It also covers urban areas of Port-Au-Prince, the capital city of Haiti.

  • Activated Carbon And Adsorption Of Trichloroethylene (TCE) And Tetrachloroethylene (PCE)

    Trichloroethylene (TCE) and Tetrachloroethylene (PCE) are two of the most common solvents that contaminate groundwater supplies in the United States. Both solvents see frequent use in the extraction of fat, in the textile industry, in the production of various pharmaceutical and chemical products. TCE is also used as a degreaser from fabricated metal parts, and PCE serves as a component of aerosol dry-cleaning solvents.

  • Ultrapure Water For Determination of Toxic Elements In Environmental Analyses

    In this paper the importance of reagent water quality for toxic element environmental analyses is discussed, and the suitability of fresh ultrapure water produced using MilliporeSigma water purification systems for ICP-OES and ICP-MS trace element analyses in environmental laboratories is demonstrated.

More Drinking Water Application Notes

DRINKING WATER PRODUCTS

Capital Controls&reg; Series 71P11A Gas Pressure Reducing Valve Capital Controls® Series 71P11A Gas Pressure Reducing Valve

The Series 71P11A Gas Pressure Reducing and Shutoff Valve is a diaphragm-type gas pressure regulating valve designed for use on chlorine, sulfur dioxide and ammonia gas service. The valve is used in a gas dispensing system to prevent liquefaction of the gas by providing a controlled pressure drop in the piping system. Downstream pressure is regulated to a reduced value by adjustment of the control setting. If the downstream pressure exceeds the pressure at which the valve is set, gas flow will be shut off.

MARINER OMNIPURE&reg; Marine Sanitation Devices MARINER OMNIPURE® Marine Sanitation Devices

The MARINER OMNIPURE® series of Marine Sanitation Devices offer a fresh approach to sewage treatment in the workboat vessel market. With treatment capacities of up to 60 persons (black water) and up to 25 persons (black and gray), the largest unit treats 1,796 gallons (6,800 Liters) of human wastewater per day. The USCG Certified Type II MARINER OMNIPURE units incorporate the same electrolytic treatment benefits of any other OMNIPURE unit, but with the added advantages of less maintenance and a small, compact size to fit vessels in the workboat vessel market.

Level and Open Channel Flow Measurement Level and Open Channel Flow Measurement

Whether you are measuring liquids, slurries or bulk solids, Siemens provides the ideal level transmitters for every job. Our best-in-class level transmitter devices set the standard in their respective disciplines for water, cement, mining, chemical, petrochemicals, food, beverage, pharmaceutical and other industries.

Ball Valves Ball Valves

For more than seventy years, the Henry Pratt Company has provided superior quality valves for pump control applications. Our ball valves are designed to meet or exceed AWWA C507 standards. Pratt ball valves have been tested at 300 psi differential for 10,000 cycles per AWWA C-507, Section 5.2.4.3, proof-of-design requirements and tested bubble-tight at the conclusion of the cycle tests. Ball valves have also been tested to prove their resistance to the effects of cavitation. After several free discharge cycles at 200 psi pressure, a test valve was subjected to a 100 hour continuous cavitation test at 95 psi differential pressure and a valve angle of 25 degrees. Line velocities in excess of 70 feet/second and localized velocities across the seat in excess of 100 feet/second were attained during the tests. At the conclusion of the tests, the valve was bubble-tight at 300 psi.

iPERL&reg; (North America) Residential Water Meters iPERL® (North America) Residential Water Meters

iPERL® (North America) smart water meters offer unparalleled, low-flow accuracy with high-flow durability. They use innovative magnetic technology to capture previously unmeasured low flow. iPERL meters increase your returns while maximizing your operational efficiency. And that can help you drive additional revenue.

Recordall&reg; Disc Series Meters Recordall® Disc Series Meters

Recordall Disc Series Meters from Badger Meter are an accurate, cost-effective solution for your residential metering needs. Combining the accuracy of positive displacement meters with the reliability and economy of nutating disc technology, the simple but efficient design of this meter makes it an ideal solution for measuring flow.

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LATEST INSIGHTS ON DRINKING WATER

  • How Tech Can Conserve And Improve Access To Water
    How Tech Can Conserve And Improve Access To Water

    As South Africa commemorates National Water Week from March 17 to 23 to highlight the scarcity of this vital resource, municipalities and utilities around the country are increasingly turning to technology to help them with both conservation and expanding accessibility to more communities.

  • EPA's Plan To Regulate Chemical Contaminants In Drinking Water Is A Drop In The Bucket
    EPA's Plan To Regulate Chemical Contaminants In Drinking Water Is A Drop In The Bucket

    After more than a year of community meetings and deliberations, the U.S. EPA announced in February 2019 that it would begin the process of regulating two drinking water contaminants, seeking to stem a growing national public health crisis. If EPA follows through, this would be the first time in nearly 20 years that it has set an enforceable standard for a new chemical contaminant under the Safe Drinking Water Act.

  • Cities Turn To Desalination For Water Security, But At What Cost?
    Cities Turn To Desalination For Water Security, But At What Cost?

    Removing salts and other impurities from water is really difficult. For thousands of years people, including Aristotle, tried to make fresh water from sea water. In the 21st century, advances in desalination technology mean water authorities in Australia and worldwide can supply bountiful fresh water at the flick of a switch.

  • Why Big Storms And Deep Snows Don’t Always Equal Full Reservoirs
    Why Big Storms And Deep Snows Don’t Always Equal Full Reservoirs

    There’s a lot of attention paid to Colorado’s high country through the winter months.

  • How Can We Start The Journey To Smart Water Networks?
    How Can We Start The Journey To Smart Water Networks?

    In the developed world, potable water is delivered to people via a complex infrastructure consisting of water catchment, water treatment, water storage (reservoirs, towers), and water distribution (pipes). The first two elements are well understood; what is less understood is what happens to water as it journeys to the tap.

  • Global Experts Offer 2019 Smart Water Insights
    Global Experts Offer 2019 Smart Water Insights

    What are some of the biggest global challenges, trends, and opportunities for the smart water sector in 2019? To answer these questions, the Smart Water Networks Forum (SWAN) interviewed four industry experts from Australia, North America, the UK, and India.

More Drinking Water Features

DRINKING WATER VIDEOS

CIPP Installation Process Animation CIPP Installation Process Animation

IPR'S CIPP liner system for gravity-flow sewers and culverts is the most proven, cost-effective trenchless pipeline rehabilitation system in the industry. It is also the most widely specified form of trenchless pipeline rehabilitation.

We Are All Vulnerable To The Effects Of Water Pollution

Dr. Jamie Dewitt explains her research in Phamacology and Toxicology and why water pollution might pose a problem no matter where you are.

Xylem Water Prize 2017

The International Junior Science Olympiad 2017 (IJSO) was held in the Netherlands in December 2017. Xylem Inc. was official sponsor of the event, in which students aged 15 from 50 countries compete with one another on the topic Water & Sustainability.

Kupferle Foundry - #9800i-GENESIS Turbine Powered Automatic Flushing Device With Chlorine Analyzer

The Eclipse i-Series model #9800i-GENESIS is the newest Intelligent Flushing & Monitoring Station Kupferle offers to maintain safe residual levels and remove DBPs from consumers' water. This permanently installed station incorporates a built-in chlorine analyzer to measure and record disinfectant residual levels based on a programmed sampling schedule.

Engineers Design New Lead Detector For Water

New sensor offers continuous monitoring, immediate detection of lead.

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ABOUT DRINKING WATER

In most developed countries, drinking water is regulated to ensure that it meets drinking water quality standards. In the U.S., the Environmental Protection Agency (EPA) administers these standards under the Safe Drinking Water Act (SDWA)

Drinking water considerations can be divided into three core areas of concern:

  1. Source water for a community’s drinking water supply
  2. Drinking water treatment of source water
  3. Distribution of treated drinking water to consumers

Drinking Water Sources

Source water access is imperative to human survival. Sources may include groundwater from aquifers, surface water from rivers and streams and seawater through a desalination process. Direct or indirect water reuse is also growing in popularity in communities with limited access to sources of traditional surface or groundwater. 

Source water scarcity is a growing concern as populations grow and move to warmer, less aqueous climates; climatic changes take place and industrial and agricultural processes compete with the public’s need for water. The scarcity of water supply and water conservation are major focuses of the American Water Works Association.

Drinking Water Treatment

Drinking Water Treatment involves the removal of pathogens and other contaminants from source water in order to make it safe for humans to consume. Treatment of public drinking water is mandated by the Environmental Protection Agency (EPA) in the U.S. Common examples of contaminants that need to be treated and removed from water before it is considered potable are microorganisms, disinfectants, disinfection byproducts, inorganic chemicals, organic chemicals and radionuclides.

There are a variety of technologies and processes that can be used for contaminant removal and the removal of pathogens to decontaminate or treat water in a drinking water treatment plant before the clean water is pumped into the water distribution system for consumption.

The first stage in treating drinking water is often called pretreatment and involves screens to remove large debris and objects from the water supply. Aeration can also be used in the pretreatment phase. By mixing air and water, unwanted gases and minerals are removed and the water improves in color, taste and odor.

The second stage in the drinking water treatment process involves coagulation and flocculation. A coagulating agent is added to the water which causes suspended particles to stick together into clumps of material called floc. In sedimentation basins, the heavier floc separates from the water supply and sinks to form sludge, allowing the less turbid water to continue through the process.

During the filtration stage, smaller particles not removed by flocculation are removed from the treated water by running the water through a series of filters. Filter media can include sand, granulated carbon or manufactured membranes. Filtration using reverse osmosis membranes is a critical component of removing salt particles where desalination is being used to treat brackish water or seawater into drinking water.

Following filtration, the water is disinfected to kill or disable any microbes or viruses that could make the consumer sick. The most traditional disinfection method for treating drinking water uses chlorine or chloramines. However, new drinking water disinfection methods are constantly coming to market. Two disinfection methods that have been gaining traction use ozone and ultra-violet (UV) light to disinfect the water supply.

Drinking Water Distribution

Drinking water distribution involves the management of flow of the treated water to the consumer. By some estimates, up to 30% of treated water fails to reach the consumer. This water, often called non-revenue water, escapes from the distribution system through leaks in pipelines and joints, and in extreme cases through water main breaks.

A public water authority manages drinking water distribution through a network of pipes, pumps and valves and monitors that flow using flow, level and pressure measurement sensors and equipment.

Water meters and metering systems such as automatic meter reading (AMR) and advanced metering infrastructure (AMI) allows a water utility to assess a consumer’s water use and charge them for the correct amount of water they have consumed.